Rotating Mechanism and Housing Case

The present disclosure is a continuation of U.S. Application No. Ser. No. 18/066,587, filed on Dec. 15, 2022, which is a continuation of International Patent Application No. PCT/CN2021/095439, filed on May 24, 2021, which claims priority to Chinese Patent Application No. 202010550871.6, filed on Jun. 16, 2020, and Chinese Patent Application No. 202021113797.3, filed on Jun. 16, 2020. The entire disclosures of the above-identified applications are hereby incorporated herein by reference.

The present disclosure relates to the technology field of earphone storage, and in particular to a rotating mechanism and a housing case.

A current earphone charging box includes a case body and a case cover pivotally connected to the case body. The case body forms a holding space with a top opening, and the case cover is configured to close the case body. The case cover pivots relative to the case body to be switched between an open position and a closed position. The holding space of the case usually requires to accommodate not only earphones but also other structures for charging the earphones, therefore it is important to make a structure of earphone charging box compact.

The present disclosure provides a housing case, includes: a case, a cover, a mounting base, and a rotating shaft. The case defines a first notch in a side wall of the case. The cover is connected to the case and has an open position at which the case is opened and a closed position at which the case is closed. The mounting base is mounted in the first notch, and includes a base body. The base body includes: a supporting bar; two connecting bars; and a connecting panel. One of the connecting bars is connected to one of the two opposite ends of the supporting bar, the other of the connecting bars is connected to the other of two opposite ends of the supporting bar, and the supporting bar and the two connecting bars cooperatively define a second notch. The connecting panel is connected to the cover and includes: an intermediate portion; and an outer-edge portion, arranged at a periphery of the intermediate portion. The rotating shaft extends through the connecting panel and connected to the case to enable the cover to be switched between the open position and the closed position. When the cover is in the closed position, the outer-edge portion, the supporting bar, and the two connecting bars are enclosed together to define a ring structure, and the intermediate portion is arranged in the ring structure, such that the supporting bar, the two connecting bars, the outer-edge portion and the intermediate portion cooperatively close the first notch, while the outer-edge portion and the intermediate portion cooperatively close the second notch.

17 FIG. 17 FIG. It should be noted that some embodiments and some technical features in the embodiments of the present disclosure may be combined with each other without conflict. In the embodiments of the present disclosure, “mm” refers to the international unit millimeter. The “top”, “bottom”, orientation or position relationship is based on the orientation or position relationship shown in the attached. In some embodiments, the top inis “top” and the bottom is “bottom”. It should be understood that these orientation terms are intended only to facilitate and simplify the description of the present disclosure, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore are not to be considered as a limitation of the present disclosure. The detailed description in the embodiments is to be understood as an explanatory statement of the purpose of the present disclosure and is not to be considered an undue limitation of the present disclosure.

Some embodiments of the present disclosure expect to provide a rotating mechanism and a housing case, featuring a compact structure. To achieve the above beneficial effect of the feature, a technical solution in the embodiments of the present disclosure is realized as follows.

Some embodiments of the present disclosure provide, in one aspect, a rotating mechanism including a connecting panel, a mounting base, and a rotating shaft.

The connecting panel has a first position and a second position.

221 a The mounting base includes a base body and two protruding portions, one of the two protruding portions extends along one of both sides of the base body, and the other of the two protruding portions extends along the other of both sides of the base body. The base body defines a notch, the notch is defined between the two protruding portions, each of the protruding portions define an accommodation slot, and the accommodation slot is opened toward an outer side of the base body; when the connecting panel is arranged in the first position, a portion of the connecting panel is arranged on an inner side of the base body; and when the connecting panel is arranged in the second position, the portion of the connecting panel is arranged in the notch and closes the notch. Herein, the notch defined in the base body may also be referred as the second notchin the following.

The rotating shaft extends through the connecting panel and the base body and further extending into the accommodation slot to enable the connecting panel to be switched between the first position and the second position.

In some embodiments, the base body includes a supporting bar and two connecting bars, the supporting bar extends in an axial direction of the rotating shaft, one of the connecting bars is connected to one of the two opposite ends of the supporting bar, and the other of the connecting bars is connected to the other of two opposite ends of the supporting bar. The supporting bar and the connecting bars cooperatively define the second notch, each of the protruding portions is connected to a corresponding one of the connecting bars, and the rotating shaft extends through the connecting bars and further extends into the accommodation slot.

The connecting panel comprises a first panel body and a second panel body, the first panel body comprises an intermediate portion and an outer-edge portion, the outer-edge portion is arranged at a periphery of the intermediate portion, and the outer-edge portion defines an avoidance slot on each of both opposite sides along the axial direction of the rotating shaft; when the connecting panel is arranged in the second position, a portion of each of the connecting bars is arranged in the avoidance slot, the outer-edge portion, the supporting bar, and the two connecting bars are enclosed together to define a ring structure, and the intermediate portion is arranged in the ring structure; the second panel body is connected to an inner end face of the first panel body, the second panel body defines a second shaft hole arranged along the axial direction of the rotating shaft, and the rotating shaft penetrates into the second shaft hole.

In another aspect, a housing case is provided in some embodiments of the present disclosure. The housing case includes a case cover, a case body, and a rotating shaft. the first notch.

In some embodiments, the connecting panel includes a first panel body and a second panel body.

The first panel body defines an avoidance slot on each of both opposite sides of the first panel body along the axial direction of the rotating shaft. When the cover shell is in the closed position, a portion of each of the connecting bars is arranged in the avoidance slot, and the portion of each of the connecting bars, a portion of the supporting bar, and the first panel body cooperatively enclose the first notch.

The second panel body includes a connecting portion and an extension portion extending from the connecting portion toward the case cover. The connecting portion is connected to a side of the first panel body near the holding space. The connecting portion defines a second shaft hole disposed in the axial direction of the rotating shaft, and the rotating shaft penetrates into the second shaft hole.

In some embodiments, the first panel body includes an intermediate portion and an outer-edge portion. The outer-edge portion is arranged at a periphery of the intermediate portion, and the avoidance slot is defined in the outer-edge portion; the outer-edge portion, the supporting bar, and the connecting bars are enclosed together to form a ring structure, and the intermediate portion is arranged in the ring structure.

In some embodiments, the first panel body defines a groove on an end face facing toward the holding space, the groove extends in the axial direction of the rotating shaft, and a portion of the rotating shaft is arranged in the groove.

In some embodiments, the second panel body includes a tab extending from the connecting portion toward the base body, the base body comprises a top panel connected to a top of each of the connecting bars, and the supporting bar and the top panel cooperatively define a rotating space. The rotating shaft is arranged between the top panel and the supporting bar along a height direction of the base body, the tab is capable of rotating around an axis of the rotating shaft within the rotating space, the tab is capable of abutting against the top panel to limit the open position of the cover shell, and the tab is capable of abutting against the supporting bar to limit the closed position of the cover shell.

In some embodiments, at least one of the connecting portion and the tab has a dimension along the axial direction of the rotating shaft less than a dimension of the first panel body along the axial direction of the rotating shaft.

In some embodiments, the top panel defines an opening slot opened towards the connecting portion; when the cover shell is in the closed position, a portion of the connecting portion is arranged within the opening slot.

In some embodiments, the mounting base is an integrally-formed structure.

And/or, the connecting panel is an integrally-formed structure.

In some embodiments, when the cover shell is in the closed position, an outer surface of the shell body, a surface of the base body arranged in the first notch, and a surface of the connecting panel cooperatively form a smooth surface.

In some embodiments, the housing case comprises a elastic member, the cover shell has a critical position arranged between the closed position and the open position, and the elastic member is loaded between the mounting base and the connecting panel; when the cover shell is arranged in the critical position, a torque exerted by the elastic member on the case cover is zero; and when the cover shell deviates to either side of the critical position along a direction of rotation, the elastic member exerts a driving torque on the case cover to drive the cover shell to move to the closed position or the open position.

In some embodiments, the elastic member includes one or more torsion springs, and each of the one or more torsion springs comprises a first leg, a second leg, and a spiral body; the first leg and the second leg are connected to opposite sides of the spiral body in an axial direction, the first leg is connected to the base body, the second leg is connected to the connecting panel to drive the cover shell to rotate around an axis of the rotating shaft, and an angle between an axis of the spiral body and the axis of rotating shaft is in a range from 45°to 90°.

In some embodiments, the number of the one or more torsion springs is two, an end of the first leg of one of the torsion springs is fixedly connected to an end of the first leg of the other of the torsion springs, and the axis of the spiral body of one of the torsion springs is substantially parallel to the axis of the spiral body of the other of the torsion springs.

In some embodiments, the connecting panel defines insertion holes on both opposite sides of the connecting panel along an axial direction of the rotating shaft, an end of the second leg of one of the torsion springs is arranged in one of the insertion holes, and an end of the second leg of the other of the torsion springs is arranged in the other of the insertion holes.

In some embodiments, the shell body defines an insertion slot on an inner surface of the housing, the base body is capable of being inserted into the insertion slot from the top opening of the holding space, and the base body is supported on a bottom wall of the insertion slot.

In some embodiments, the case body comprises a first protrusion bar and two second protrusion bars, the first protrusion bar and the two second protrusion bars protrude from the inner surface of the shell body, the first protrusion bar extends in a direction substantially parallel to an axial direction of the rotating shaft, and each of the two second protrusion bars extends from a corresponding one of two opposite ends of the first protrusion bar toward the case cover; an end of one of the second protrusion bars away from the shell body is bent toward a side of the other of the second protrusion bars, the two second protrusion bars, the first protrusion bar, and the inner surface of the shell body cooperatively define the insertion slot, and the base body is supported on the first protrusion bar.

In some embodiments, the housing case comprises a storage panel abutting against a side of the base body facing the case cover, and the base body is fixed in the insertion slot via the storage panel.

In some embodiments, the housing case is an earphone charging box, earphones are stored in the holding space, and the earphone charging box is capable of charging the earphones.

In a further aspect, a housing case may be provided. The housing case includes a case, defining a first notch in a side wall of the case; a cover, connected to the case and having an open position at which the case is opened and a closed position at which the case is closed; a mounting base, mounted in the first notch, and comprising: a supporting bar; and two connecting bars, wherein one of the connecting bars is connected to one of the two opposite ends of the supporting bar, the other of the connecting bars is connected to the other of two opposite ends of the supporting bar, and the supporting bar and the two connecting bars cooperatively define a second notch; a connecting panel, connected to the cover and comprising: an intermediate portion; and an outer-edge portion, arranged at a periphery of the intermediate portion; and a rotating shaft, extending through the connecting panel and connected to the case to enable the cover to be switched between the open position and the closed position. When the cover is in the closed position, the outer-edge portion, the supporting bar, and the two connecting bars are enclosed together to define a ring structure, and the intermediate portion is arranged in the ring structure, such that the supporting bar, the two connecting bars, the outer-edge portion and the intermediate portion cooperatively close the first notch, while the outer-edge portion and the intermediate portion cooperatively close the second notch.

8 16 FIGS.to 18 FIG. 8 FIG. 12 22 30 22 221 222 222 221 222 221 221 221 221 222 222 222 222 221 222 12 12 221 12 221 12 221 12 12 221 221 30 12 221 222 12 a a a a a a a a a a A rotating mechanism and a housing case provided in some embodiments of the present disclosure are described as following. As shown in, the rotating mechanism provided in some embodiments of the present disclosure includes a connecting panel, a mounting base, and a rotating shaft. The connecting panel has a first position and a second position. The mounting baseincludes a base bodyand two protruding portions, one of the two protruding portionsextends along one of both sides of the base body, and the other of the two protruding portionsextends along the other of both sides of the base body. The base bodydefines a second notch, and the second notchis defined between the two protruding portions. Each of the protruding portionsdefines an accommodation slot. The accommodation slotis opened towards an outer side of the base body. That is, the accommodation slotis opened toward a direction back from or away from the first position. When the connecting panelis arranged in the first position, a portion of the connecting panelis arranged on an inner side of the base body(shown in). That is, the connecting panelis arranged outside the second notchand the portion of the connecting paneldoes not close the second notch. When the connecting panelis arranged in the second position, the portion of the connecting panelis arranged in the second notchto close the second notch(shown in). The rotating shaftextends through the connecting paneland the base bodyand further extends into the accommodation slotto enable the connecting panelto be switched between the first position and the second position.

12 30 22 12 30 12 12 30 12 22 222 222 30 222 12 221 30 22 12 221 30 22 12 221 21 221 222 22 222 30 221 30 221 21 12 12 22 221 221 21 221 12 12 221 221 30 22 18 FIG. 9 FIG. 4 FIG. a a a a a b b b The connecting panelrotates around the axis of the rotating shaftrelative to the mounting base. When the connecting panelrotates around the axis of the rotating shaftin a first direction, the connecting panelmay be arranged in the first position (as shown in). When the connecting panelrotates around the axis of the rotating shaftin a second direction, the connecting panelmay be arranged in the second position (as shown in). The mounting basemay be arranged on a housing. The housing may be a case body of a housing case, a panel, or a housing of another device that needs to achieve a rotational connection. The housing defines a first notch. The mounting base is disposed in the first notch of the housing, with the open portion of the accommodation slotfacing a side wall of the housing (as shown in), so that the accommodation slotmay be adopted to define a first shaft hole together with the side wall of the housing. Since the rotating shaftextends into the accommodation slotthrough the connecting paneland the base body, that is, the rotating shaftpenetrates into the first shaft hole(for example, regarding the housing as the case body of the housing case) through the connecting paneland the base body, which means the rotating shaftpenetrates into the first shaft holethrough the connecting paneland the base bodyarranged in the first notch, the base bodyas well as the protruding portionsare adopted to bear a bending moment and torque. In this way, while ensuring that the mounting baseis able to bearing enough bending moment and torque, by applying the protruding portionsto bear most of the force from the rotating shaft, the size of a portion of the base bodyconnected to the rotating shaftmay be configured as small as possible, which means the size of the portion of the base bodyarranged in the first notchmay be configured as small as possible. When the connecting panelis in the second position, a user may observe the connecting paneland the mounting basefrom the outer side of the base body. With a small size of the portion of the base bodyarranged in the first notch, a visual effect of an integrated structure between the base bodyand the connecting panelmay be achieved, avoiding a visual segmentation of the connecting paneland the base bodycaused by a situation that the portion of the base bodyconnected to the rotating shafthas to be configured to be larger in order to ensure that the mounting baseis effectively stressed. From the perspective of industrial design, a structure in the embodiments of the present disclosure may greatly improve the aesthetics and increase the texture as well as product expression.

8 16 FIGS.to 221 2211 2212 12 121 122 2211 30 2211 30 2211 2211 2211 22 2211 2212 2211 2211 2212 221 222 2212 30 2212 222 121 1211 1212 1212 1211 1212 121 1212 30 12 2212 121 1212 2211 2212 1211 12 22 22 1212 2211 2212 122 121 122 121 221 122 1221 1222 1221 22 1221 121 1222 122 1221 30 30 1221 122 121 122 30 1221 1221 2211 2212 21 21 2211 21 2212 21 2211 21 2212 21 2212 2211 121 21 2212 2211 21 12 21 21 221 30 221 22 a a a a a a a a a b b b b b b b b b b In some embodiments, the rotating mechanism in the embodiments of the present disclosure may be shown in. The base bodyincludes a supporting barand two connecting bars. The connecting panelincludes a first panel bodyand a second panel body. The supporting barextends along an axial direction of the rotating shaft. That is, the supporting barextends in a direction substantially parallel to the axial direction of the rotating shaft. In some embodiments, the supporting barincludes a step surfaceformed on an end face of the supporting barfacing toward an outer side of the mounting base. The step surfaceis supported on a bottom wall of the first notch of the housing. Each of the two connecting barsare connected to a corresponding end of the supporting bar, respectively. The supporting barand the two connecting barscooperatively define or enclose the second notchtogether. Each of the protruding portionsis connected to a corresponding one of the connecting bars. The rotating shaftextends through the connecting barsand further into the accommodation slot. The first panel bodyincludes an intermediate portionand an outer-edge portion. The outer-edge portionis arranged at a periphery of the intermediate portion. The outer-edge portiondefines an avoidance sloton each of both opposite sides of the outer-edge portionalong the axial direction of the rotating shaft. When the connecting panelis in the second position, a portion of each of the connecting barsis arranged in the avoidance slot. The outer-edge portion, the supporting bar, and the two connecting barsare enclosed together to form a ring structure. The intermediate portionis arranged in the ring structure. In this way, when the user observes the connecting paneland the mounting basefrom the outer side of the mounting base, a visual effect of an integrated structure among the outer-edge portion, the supporting bar, and the two connecting barsmay be achieved. The second panel bodyis connected to an inner end face of the first panel body. That is, the second panel bodyis connected to an end face of the first panel bodynear or close to the inner side of the base body. In some embodiments, the second panel bodyincludes a connecting portionand an extension portionextending from the connecting portionin a direction away from the mounting base. The connecting portionis connected to the inner end face of the first panel body. The extension portionis adopted as a force-bearing structure for connecting to an external structure. The second panel bodydefines a second shaft holedisposed in the axial direction of the rotating shaft. The rotating shaftpenetrates the second shaft hole. In this way, by applying the second panel bodyas the main force-bearing structure, the first panel bodymay cover the second panel bodyand the rotating shaft. In some embodiments, the second shaft holemay be defined in the connecting portion. The supporting barand the two connecting barsare mounted in the first notchand connected to at least part of walls (including side walls, a bottom wall, etc.) defining the first notchof the housing. In some embodiments, the supporting barmay be connected to the bottom wall defining the first notch, and the two connecting barsmay be connected to the side walls defining the first notch. In some embodiments, it is also possible that the supporting baris connected to both the bottom wall and the side walls defining the first notch, or the two connecting barsmay be connected to both the bottom wall and the side walls defining the first notch, which is not limited in the present disclosure. The portion of each of the connecting bars, a portion of the supporting bar, and the first panel bodyjointly or cooperatively close the first notch. That is, when the rotating mechanism is arranged on the housing, the portion of each of the connecting barsand the portion of the supporting barare both arranged in the first notchof the housing, and further cooperate with the portion of the connecting panelto close the first notchof the housing. In this way, the side wall of the first notchof the housing is adopted to limit a movement of the base bodyalong the axial direction of the rotating shaft, and the bottom wall of the first notch of the housing is adopted to limit a downward movement of the base body, thereby improving the structural stability of the mounting base.

1 7 FIGS.to 8 10 FIGS.to 12 FIG. 4 FIG. 10 20 30 10 11 12 11 20 21 22 21 21 21 21 21 21 22 221 222 2222 221 222 221 221 221 222 222 12 22 21 21 222 21 222 21 222 21 22 30 12 221 22 11 21 11 12 221 221 221 12 21 a b a b a a b b a a a a a a a b. In some embodiments, the rotating mechanism provided in some embodiments of the present disclosure is adopted in a housing case, as shown in. The housing case provided in some embodiments of the present disclosure includes a case cover, a case body, and a rotating shaft. The case coverincludes a cover shelland a connecting panelconnected to the cover shell. The case bodyincludes a shell bodyand a mounting base. The shell bodyincludes a holding spaceopened at a top and a first notchdefined in a side wall of the shell body. The holding spaceis fluidly connected to the first notch. The mounting baseincludes a base bodyand two protruding portions, one of the two protruding portionsextends along one of both sides of the base body, and the other of the two protruding portionsextends along the other of both sides of the base body(shown in). The base bodydefines a second notch(shown in). Each of the protruding portionsdefines an accommodation slot(shown in FIG.). The mounting baseis received or mounted in the first notchand connected to the walls defining the first notch. The protruding portionsare arranged in the holding space. The accommodation slotis opened towards the side wall of the shell body. The accommodation slotand the side wall of the shell bodyare enclosed together to form the first shaft hole(shown in). The rotating shaftextends through the connecting paneland the base bodyand further into the first shaft holeto enable the cover shellto be switched between an open position and a closed position of the shell body. While the cover shellis in the closed position, a portion of the connecting panelis arranged in the second notchto close the second notch, and a portion of the base bodyand the portion of the connecting panelcooperatively close the first notch

10 30 20 10 30 11 21 21 10 30 11 11 21 221 12 21 221 12 21 12 21 221 221 10 20 12 221 21 221 21 221 21 22 222 21 30 22 12 221 30 22 12 221 21 221 222 221 222 30 221 30 221 21 11 10 20 21 222 22 21 221 21 221 12 12 221 221 30 22 221 21 22 30 222 21 222 21 22 222 21 222 21 22 20 20 a a b b b a a a a b b a a a a b b b b a a a The case covermay rotates around an axis of the rotating shaftrelative to the case body, so that the case coverrotates around the axis of the rotating shaftin a first direction, and the cover shellmay be arranged in the open position. In this way, items may be placed into the holding spacethrough a top opening of the holding space. The case covermay further rotate around the axis of the rotating shaftin a second direction. In this way, the cover shellis arranged in the closed position, and the cover shellcovers and closes the shell body. The portion of the base bodyand the portion of the connecting panelclose the first notchtogether, that is, the portion of the base bodyand the portion of the connecting panelare both arranged in the first notch. The portion of the connecting panelarranged in the first notchis also arranged in the second notchand closes the second notch. During a rotation of the case coverrelative to the case body, the portion of the connecting panelarranged in the second notchmoves toward an interior of the shell bodywith avoidance of being collided with the second notchand the first notch, while the portion of the base bodyarranged in the first notchis fixed. The first shaft holeis defined by the accommodation slotand the side wall of the shell bodycooperatively. The rotating shaftpenetrates into the first shaft holethrough the connecting paneland the base body, which means the rotating shaftpenetrates into the first shaft holethrough the portion of the connecting paneland the base bodyarranged in the first notch. The base bodyand the protruding portionsare adopted to bear the bending moment and torque together. In this way, while ensuring that the base bodyis able to bearing enough bending moment and torque, by applying the protruding portionsto bear most of the force from the rotating shaft, the size of the portion of the base bodyconnected to the rotating shaftmay be configured as small as possible, which means the size of the portion of the base bodyarranged in the first notchmay be configured as small as possible. In case that the cover shellis in the closed position, when the user observes the case coverand case bodyfrom a side of the shell bodyback from the protruding portions, most portions of the mounting baseare hidden in the shell body. With a small size of the portion of the base bodyarranged in the first notch, a visual effect of an integrated structure between the base bodyand the connecting panelmay be achieved, avoiding a visual segmentation of the connecting paneland the base bodycaused by a situation that the portion of the base bodyconnected to the rotating shafthas to be configured to be larger in order to ensure that the mounting baseis effectively stressed. From the perspective of industrial design, a structure in the embodiments of the present disclosure may greatly improve the aesthetics and increase the texture as well as product expression. In addition, the portion of the base bodyarranged in the first notchmay be configured to limit the movement of the mounting basealong the axial direction of the rotating shaft. Further, since the accommodation slotis opened towards the side wall of the shell body, the accommodation slotand the side wall of the shell bodyare jointly defined or enclosed to form the first axial hole. In this way, each of the protruding portionsmay be attached closely to the side wall of the shell body, reducing a distance between each of the protruding portionsand the side wall of the shell body, avoiding the mounting basefrom occupying too much space in the case body, thereby making a structure of the case bodymore compact.

221 21 21 221 21 21 221 221 221 221 221 a a It should be noted that the second direction is opposite to the first direction. Exemplarily, when the first direction is clockwise, the second direction is counterclockwise. When the first direction is counterclockwise, the second direction is clockwise. The inner side of the base bodyis a side of the shell bodynear or close to the holding space. In contrast, the outer side of the base bodyis a side of the shell bodyaway from the holding space. That is, the inner side of the base bodyand the outer side of the base bodyrefer to two opposite sides of the base body. For the purpose of the description of the present disclosure, the embodiments of the present disclosure define the inner side of the base bodyand the outer side of the base body.

12 11 12 11 It will be understood that the rotating mechanism provided in some embodiments of the present disclosure is adopted for the housing case. The connecting panelof the rotating mechanism being in the first position means the cover shellof the housing case is in the open position. The connecting panelin the rotating mechanism being in the second position means the cover shellof the housing case is in the closed position.

1 7 FIGS.to 21 20 20 20 22 22 21 a In some embodiments, as shown in, the housing case is an earphone charging box, and earphones are able to be stored in the holding space. The earphone charging box is capable of charging the earphones. Since the case bodyis not only adopted to accommodate the earphones but also adopted to configure a power supply, a circuit board, charging contacts, and other structures applied to charge the earphones, there are multiple components in the case body, causing the space in the case bodyfor holding the mounting baserelatively small. However, the mounting basein the embodiments of the present disclosure is compact and applicable for the small space in the shell bodyof the earphone charging box.

The earphone charging box is configured to charge matching earphones. In some embodiments, the earphone charging box includes an internal power supply for storing electricity. When the earphones are arranged in the earphone charging box, the power supply for storing electricity may charge the earphones. The earphones in the embodiments of the present disclosure may be paired and connected with intelligent terminals such as cell phones, tablets, etc. Audios may be automatically switched to the earphones when the user uses the intelligent terminals. The earphones may be Bluetooth earphones, infrared earphones, etc., and without limited herein.

8 14 FIGS.to 221 2211 2212 2211 30 2211 2211 2211 21 2211 21 2212 2211 2211 2212 221 222 2212 30 2212 22 2211 2212 21 2212 2211 21 12 21 21 221 30 21 221 22 a a b a a b b b b b In some embodiments, as shown in, the base bodyincludes a supporting barand connecting bars. The supporting barextends along the axial direction of the rotating shaft. The supporting barincludes the step surfaceformed on an end face of the supporting barfacing toward the outer side of the shell body. The step surfaceis supported on a bottom wall of the first notch. Each of the two connecting barsare connected to a corresponding end of the supporting bar, respectively. The supporting barand the two connecting barscooperatively define or enclose the second notch. Each of the protruding portionsis connected to corresponding one of the connecting bars. The rotating shaftextends through the connecting barsand further extends into the first shaft hole. The supporting barand the two connecting barsare connected to the first notch. That is, a portion of each of the connecting barsand a portion of the supporting barare both arranged in the first notch, and further cooperate with the portion of the connecting panelto close the first notch. In this way, the side wall of the first notchis adopted to limit the movement of the base bodyalong the axial direction of the rotating shaft, and the bottom wall of the first notchis adopted to limit the downward movement of the base body, thereby improving the structural stability of the mounting base.

1 FIG. 7 FIG. 9 FIG. 12 FIG. 7 FIG. 12 FIG. 9 FIG. 2212 21 30 21 30 15 221 21 2212 21 30 2212 21 12 b b b b b In some embodiments, as shown in,,, and, a length of the portion of each of the connecting bars(shown in) arranged in the first notch(shown in) along the axial direction of the rotating shaft(shown in) is defined as A, and 0.5 mm≤A ≤1.2 mm. For example, A may be 0.5 mm, 0.8 mm, 1.0 mm, 1.1 mm, or 1.2 mm, etc. In some embodiments, a length of the first notchalong the axial direction of the rotating shaftis defined as B, and 1/25≤A/B≤1/. For example, a ratio of A to B may be 1:25, 1:24, 1:23, 1:21, 1:20, 1:18, 1:15, etc. In this way, under the condition of ensuring the force-bearing capacity of the portion of the base bodyarranged in the first notch, the length of the portion of each of the connecting barsarranged in the first notchalong the axial direction of the rotating shaftis small enough to achieve the visual effect of nearly complete integration between the portion of each of the connecting barsarranged in the first notchand the connecting panel, thereby further improving the aesthetics.

8 11 FIGS.to 15 16 FIGS.to 12 121 122 121 121 30 11 2212 121 2212 2211 121 21 122 1221 1222 1221 10 1221 121 21 1222 11 1221 1221 30 30 1221 a a b a a a. In some embodiments, as shown inand, the connecting panelincludes a first panel bodyand a second panel body. The first panel bodydefines an avoidance sloton each of both opposite sides along the axial direction of the rotating shaft. While the cover shellis in the closed position, a portion of each of the connecting barsis arranged in the avoidance slot. The portion of each of the connecting bars, the portion of the supporting bar, and the first panel bodycooperatively close the first notch. The second panel bodyincludes a connecting portionand an extension portionextending from the connecting portiontoward the case cover. The connecting portionis connected to a side of the first panel bodynear or close to the holding space. The extension portionis connected to the cover shell. The connecting portiondefines a second shaft holein the axial direction of the rotating shaft. The rotating shaftpenetrates into the second shaft hole

30 1221 22 30 122 222 122 122 1222 11 122 1221 121 21 121 30 1221 221 20 121 21 a a a a The rotating shaftpenetrates into the second shaft holeand the first shaft hole, enabling the rotating shaftto connect the second panel bodyand the protruding portions. In this way, the second panel bodyis configured to bear the bending moment and torque, which means the second panel bodyis the main force-bearing structure. Further, the extension portionis connected to the cover shellin order to enhance the force-bearing capacity of the second panel body. Since the connecting portionis connected to the side of the first panel bodynear the holding space, the first panel bodymay cover the rotating shaft, the connecting portion, and other structures of the base bodyto prevent the internal structure of the case bodyfrom being observed by the user from the side of the first panel bodyback from the holding space, and the aesthetics of the housing case is improved.

1222 11 1222 11 1222 11 1222 11 12 11 12 11 17 FIG. 18 FIG. In some embodiments, the extension portionis connected to the cover shell. In some embodiments, the extension portionis connected to the cover shellby welding the extension portionon the cover shell. In some embodiments, the extension portionis connected to the cover shellby a connection member, which may be a bolt (shown inand). This facilitates the assembling of the connecting panelwith the cover shelland disassembling of the connecting panelfrom the cover shell.

9 10 15 FIGS.,and 121 1211 1212 1212 1211 1212 121 1212 2211 2212 1211 11 10 20 21 21 1212 2211 2212 a a In some embodiment, as shown in, the first panel bodyincludes an intermediate portionand an outer-edge portion. The outer-edge portionis arranged at a periphery of the intermediate portion. The outer-edge portiondefines the avoidance slot. The outer-edge portion, the supporting bar, and the two connecting barsare enclosed together to form a ring structure. The intermediate portionis arranged in the ring structure. In this way, in case that the cover shellis in the closed position, when the user observes the case coverand the case bodyfrom the side of the shell bodyback from or away from the holding space, the outer-edge portion, the supporting bar, and the connecting barspresent the visual effect of an integrated structure.

In some embodiments, the ring structure may be substantially circular, oval, or polygonal, etc. The polygon may be quadrilateral, pentagonal, hexagonal, etc. In some embodiments, the ring structure is a rectangle.

9 10 FIGS.and 121 2211 2212 1212 In some embodiments, as shown in, on a plane on which the first panel bodyis arranged, a projection pattern formed by the supporting barand the two connecting barstogether is symmetric with a projection pattern formed by the outer-edge portion. In this way, the aesthetic appearance is further improved.

9 10 15 FIGS.,, and 2211 1212 11 21 2211 1212 11 21 In some embodiments, as shown in, a contact seam between the supporting barand the outer-edge portionis substantially flush with a contact seam between the cover shelland the shell body. In this way, the visual effect of misalignment between the supporting barand the outer-edge portionand the cover shelland the shell bodyis avoided, further improving aesthetics.

9 10 15 FIGS.,, and 1211 1211 21 1211 21 a a. In some embodiments, as shown in, the intermediate portiondefines a recessed platform on an end face of the intermediate portionback from the holding space. The housing case includes a panel arranged on the recessed platform. The panel may be a display screen or an information sticker. The information sticker is a sticker containing warning information, product information, or other information. With the above design, the information may be conveyed by making full use of the end face of the intermediate portionback from the holding space

In some embodiments, the recessed platform may be circular, oval, or polygonal, etc. The polygon may be quadrilateral, pentagonal, hexagonal, etc. In some embodiments, the recessed platform is rectangular.

9 10 15 FIGS.,, and 1212 21 2211 21 2212 21 1212 2211 2212 1211 21 1212 2211 2212 1211 1212 2211 2212 a a a a In some embodiments, as shown in, an end face of the outer-edge portionback from or away from the holding space, an end face of the supporting barback from the holding space, and an end face of each of the connecting barsback from the holding spacemay be configured in a first color. In this way, the outer-edge portion, the supporting bar, and the connecting barspresent an integrated structure. In some embodiments, the end face of the intermediate portionback from the holding spaceis configured in a second color. The first color and the second color are configured to be different from each other, so that the difference between the first color and the second color is adopted to enable the outer-edge portion, the supporting bar, and the connecting barsto present the visual effect of an integrated structure. In some embodiments, the first color may also be the same as the second color. In this way, the intermediate portion, the outer-edge portion, the supporting bar, and the connecting barstogether present the visual effect of an integrated structure. Exemplarily, the first color may be gold and the second color may be silver.

9 10 15 FIGS.,and 1212 21 2211 21 2212 21 1212 2211 2212 1211 21 1212 2211 2212 1211 1212 2211 2212 a a a a In some embodiments, as shown in, the end face of the outer-edge portionback from the holding space, the end face of the supporting barback from the holding space, and the end face of each of the connecting barsback from the holding spacemay be configured in a first texture. In this way, the outer-edge portion, the supporting barand the connecting barspresent an integrated structure. Further, the end face of the intermediate portionback from the holding spaceis configured in a second texture. The first texture and the second texture are configured to be different from each other, so that the difference between the first texture and the second texture is adopted to enable the outer-edge portion, the supporting bar, and the connecting barto present the visual effect of an integrated structure. In some embodiments, the first texture may also be the same as the second texture. In this way, the intermediate portion, the outer-edge portion, the supporting bar, and the connecting barstogether present the visual effect of an integrated structure. Exemplarily, the first texture may be diagonal, tic-tac-toe, diamond-shaped, etc. The second texture may also be diagonal, tic-tac-toe, diamond-shaped, etc.

4 5 FIGS.and 30 22 1221 221 30 22 221 1221 22 221 1221 12 22 30 a a a a a a In some embodiments, as shown in, the rotating shaftmay be a long shaft which penetrates through the first shaft hole, the second shaft hole, and the base body. The rotating shaftmay also include two short shafts. One of the two short shafts extends through one first shaft holeand one side of the base bodyand further extends into the second shaft hole, while the other of the two short shafts extends through the other first shaft holeand the other side of the base bodyand further extends into the second shaft hole. All of the above ways may be adopted to connect the connecting paneland the mounting baseby means of the rotating shaft.

12 22 12 22 a In other embodiments, the two short shafts may also be connected to both opposite sides of the connecting panel. With each of the two short shafts extending into the corresponding first shaft hole, the connecting paneland the mounting baseare pivoted to each other.

11 16 FIGS.and 121 21 121 121 30 30 121 121 21 30 22 12 121 30 12 a b b b a b In some embodiments, as shown in, an end face of the first panel bodyfacing the holding spacedefines a groove. The grooveextends in the axial direction of the rotating shaft, and a portion of the rotating shaftis arranged in the groove. In this way, a distance between the end face of the first panel bodyfacing the holding spaceand the rotating shaftis convenient to be reduced, making the structure of the mounting basemore compact. In addition, during the rotation of the connecting panel, the cooperation of the grooveand the rotating shaftalso acts as a rotation guide, enabling a rotation process of the connecting panelto be smoother and more stable.

121 30 30 121 30 b b In some embodiments, a wall surface of the grooveis adapted to or matches with an outer surface of the rotating shaft. In other words, when the rotating shaftis cylindrical, the wall surface of the groovemay be a curved surface that matches with the outer surface of the rotating shaft.

13 18 FIGS.to 122 123 1221 221 221 2213 2212 2211 2213 22 30 2213 2211 221 123 30 22 123 2213 11 123 2211 11 2211 123 11 2213 123 11 11 11 11 2213 2214 2213 21 21 b b a a a. In some embodiments, as shown in, the second panel bodyincludes a tabextending from the connecting portiontoward the base body. The base bodyincludes a top panelconnected to a top of each of the connecting bars. The supporting barand the top panelcooperatively define a rotating space. The rotating shaftis arranged between the top paneland the supporting baralong a height direction of the base body. The tabis capable of rotating around the axis of the rotating shaftwithin the rotating space. The tabis capable of abutting against the top panelto define and limit the open position of the cover shell, and the tabis capable of abutting against the supporting barto define and limit the closed position of the cover shell. The supporting baris capable of stopping and contacting with or abutting against the tabto define the closed position of the cover shell, and the top panelis capable of stopping and contacting with or abutting against the tabto define the open position of the cover shell. In this way, it is not only possible to keep the cover shellin the closed position and the open position stably, but also to define and limit an opening angle of the cover shell. Exemplarily, the opening angle of the cover shellmay be limited by controlling a tilt angle of the top panelor by defining recessed areasin different depths on the top panel, for example, the opening angle may be 80°, 90°, 100°, etc., so as to facilitate taking items from the holding spaceor placing items into the holding space

16 FIG. 1221 30 121 30 121 1221 In some embodiments, as shown in, a dimension of the connecting portionalong the axial direction of the rotating shaftis less than a dimension of the first panel bodyalong the axial direction of the rotating shaft. The design facilitates the first panel bodyto cover up the connecting portion.

16 FIG. 123 30 121 30 123 22 221 123 b In some embodiments, as shown in, a dimension of the tabalong the axial direction of the rotating shaftis less than the dimension of the first panel bodyalong the axial direction of the rotating shaft. The design facilitates the rotation of the tabwithin the rotating spaceand avoids other structures of the base bodyfrom interfering with a movement of the tab.

12 14 FIGS.to 2213 2213 1221 11 1221 2213 2213 1221 1221 2213 12 a a a In some embodiments, as shown in, the top paneldefines an opening slotopened toward the connecting portion. While the cover shellis in the closed position, a portion of the connecting portionis arranged in the opening slot. The opening slotdefines an avoidance space for the connecting portionto avoid the connecting portionfrom interfering with the top panelduring rotation, allowing the connecting panelto rotate in a larger rotation range.

12 14 FIGS.to 22 22 22 In some embodiments, as shown in, the mounting baseis integrally formed as a one-piece structure. In this way, a structural strength between constituent components of the mounting baseis enhanced, and the processes are reduced. In some embodiments, the mounting basemay also be a split structure with the constituent components connected to each other, such as by welding.

15 16 FIGS.to 12 12 12 In some embodiments, as shown in, the connecting panelis integrally formed as a one-piece structure. In this way, a structural strength between the constituent components of the connecting panelis enhanced, and the processes are reduced. In some embodiments, the connecting panelmay also be a split structure with the constituent components connected to each other, such as by welding.

22 12 22 12 22 12 The mounting baseand the connecting panelprovided in some embodiments of the present disclosure may be made of metal materials in order to increase the texture, improve the aesthetics, and further increase the product expression. In some embodiments, the mounting baseand the connecting panelmay also be made of plastic in order to reduce weight. The embodiments of the present disclosure do not limit the materials of the mounting baseand the connecting panel.

1 2 FIGS.and 11 21 221 21 12 221 21 12 21 21 21 b b b In some embodiments, as shown in, while the cover shellis in the closed position, an outer surface of the shell body, a surface of the base bodyarranged in the first notch, and a surface of the connecting panelcooperatively form a smooth surface. That is, the base bodyarranged in the first notchand the connecting panelarranged in the first notchmay not protrude out of nor be lower than the outer surface of the shell body. The design not only improves the aesthetics, but also facilitates the user to have a better touching feeling when gripping the shell bodywithout feeling sharp corners or protruding structures.

4 5 FIGS.to 17 20 FIGS.to 40 11 40 22 12 40 22 12 40 11 40 10 11 40 10 11 In some embodiments, as shown inand, the housing case includes an elastic member. The cover shellhas a critical position. The critical position is arranged between the closed position and the open position. The elastic memberis loaded between the mounting baseand the connecting panel. That is, for the elastic member, both the mounting baseand the connecting panelare loaded by the elastic member. While the cover shellis arranged in the critical position, the elastic memberimposes a zero torque on the case cover. While the cover shelldeviates to either side of the critical position along the direction of rotation, the elastic memberimposes a driving torque on the case coverto drive the cover shellto the closed position or the open position.

11 40 10 11 11 40 11 11 40 11 It should be noted that the expressions “while the cover shelldeviates to either side of the critical position along the direction of rotation, the elastic memberimposes a driving torque on the case coverto drive the cover shellto the closed position or the open position” includes the following two cases. The first case is: while the cover shelldeviates from the critical position and is located on a first side of the critical position along the direction of rotation, the elastic memberdrives the cover shellto the open position. The second case is: while the cover shelldeviates from the critical position and is located on a second side of the critical position along the direction of rotation, the elastic memberdrives the cover shellto the closed position.

19 FIG. 19 FIG. 40 1 10 1 1 30 1 11 1 10 10 1 11 In some embodiments, as shown in, the elastic memberapplies a force Fto the case cover, and the force Fgenerates a first torque Waround the axis of the rotating shaft(simplified as the point O shown in). The first torque Wis the driving torque described above. The cover shellmoves to the closed position and remains in the closed position under the effect of the first torque W. That is, when there is no external force acting on the case coveror when the external force acting on the case coveris not sufficient to overcome the resistance formed by the first torque W, the cover shellmay not deviate from the current closed position.

20 FIG. 20 FIG. 40 2 10 2 2 30 2 1 2 11 2 10 10 2 11 As shown in, the elastic memberapplies a force Fto the case cover, and the force Fgenerates a second torque Waround the axis of the rotating shaft(simplified as the point O in). The second torque Wis the driving torque described above. The first torque Wis in an opposite direction to the second torque W. The cover shellmoves to the open position and remains in the open position under the effect of the second torque W. That is, when there is no external force acting on the case coveror when the external force acting on the case coveris not sufficient to overcome the resistance formed by the second torque W, the cover shellmay not deviate from the current open position.

11 10 1 1 11 11 40 2 10 2 2 11 40 11 2 When the cover shellneeds to be switched from the closed position to the open position, the user may slowly rotate the case cover, and the force applied by the user needs to be able to overcome the resistance provided by the first torque Wat this time. That is, the first torque Wis a resistance torque in this case. When an angle of rotation of the cover shellis able to enable the cover shellto cross the above-mentioned critical position, the elastic memberapplies the reverse second torque Wto the case cover. The direction of the second torque Wis the same as the direction of rotation. The second torque Wis the driving torque in this case. Even if being released by the user, the cover shellmay automatically rotate under the effect of the elastic memberuntil the cover shellreaches the open position, and stably remains in the open position under the effect of the second torque W.

11 10 2 2 11 11 40 1 10 11 40 11 1 When the cover shellneeds to be switched from the open position to the closed position, the user may slowly rotate the case coverin a reverse direction, and the force applied by the user needs to be able to overcome the resistance provided by the second torque Wat this time. That is, the second torque Wis a resistance torque in this case. When the angle of rotation of the cover shellis able to enable the cover shellto cross the above-mentioned critical position, the elastic memberapplies the reverse first torque Wto the case cover. Even if being released by the user, the cover shellmay automatically rotate under the effect of the elastic memberuntil the cover shellreaches the closed position, and stably remains in the closed position under the effect of the first torque W.

11 In other words, within a certain rotation range, the cover shellhas functions of automatic closing and automatic opening, and the closing process and the opening process have a damping feel, which is conducive to enhancing the users'experience.

21 FIG. 40 40 40 41 42 43 41 42 43 43 41 221 42 12 11 30 42 40 11 30 11 30 43 30 40 30 In some embodiments, as shown in, the elastic memberincludes at least one torsion spring′. The torsion spring′ includes a first leg or outrigger, a second leg or outrigger, and a spiral body. The first legand the second legare connected to opposite sides of the spiral bodyin an axial direction of the spiral body. The first legis connected to the base body, and the second legis connected to the connecting panelto drive the cover shellto rotate around the axis of the rotating shaft. In other words, the second legof the torsion spring′ is not only able to drive the cover shellto rotate around the axis of the rotating shaftin the first direction, but also able to drive the cover shellto rotate around the axis of the rotating shaftin the second direction. The first direction is opposite to the second direction. The angle between the axis of the spiral bodyand the axis of the rotating shaftis configured in a range from 45° to 90°. In this way, the space occupied by the torsion spring′ along a direction substantially perpendicular to the axis of the rotating shaftmay be reduced, making the housing case compact.

43 43 42 In some embodiments, the spiral bodyis disposed in suspension, that is, the spiral bodymay move with the second leg.

40 1 40 2 It is understood that the torsion spring′ may form the first torque Wdescribed above in a compression state or a tensile state. Further, the torsion spring′ may form the second torque Wdescribed above in a compression state or a tensile state, which is not limited herein.

11 41 42 43 43 43 43 10 1 2 1 2 43 40 43 During the rotating of the cover shell, a distance between an end of the first legand an end of the second legchanges, which causes a screw pitch of the spiral bodyto change. That is, the spiral bodyhas an elastic deformation along the axial direction of the spiral body, so that the spiral bodyobtains a rebound force along its axial direction. The rebound force is applied to the case coverto form the above-mentioned forces Fand F. Since the above-mentioned forces Fand Fare generally in the axial direction of the spiral body, the directions of the forces are relatively certain. Therefore, in a designing process of the torsion spring′, a diameter, material, a size of the screw pitch, etc. of the spiral bodyare easily designed.

43 30 43 30 40 43 41 42 40 10 40 17 FIG. In some embodiments, the axis of the spiral bodyis substantially perpendicular to the axis of the rotating shaft. That is, the angle between the axis of the spiral bodyand the axis of the rotating shaftis approximately 90°. Since the torsion spring′ relies on the force formed by the elastic deformation of the spiral bodyin the axial direction, even if the maximum distance between the end of the first legand the end of the second legis configured to be relatively small, the torsion spring′ is able to apply a large elastic force on the case cover. Therefore, the torsion spring′ has a relatively small size in the height direction (top-to-bottom direction) and the width direction (left-to-right direction) shown in, thereby making the housing case more compact.

40 40 40 It can be understood that the number of torsion springs′ may be one or plurality. The “plurality” includes two and more. It is to be noted that in embodiments where there is a plurality of torsion springs′, the plurality of torsion springs′ may be spaced apart from each other without interfering with each other, or may be connected to each other.

40 41 42 30 10 30 40 41 40 40 43 40 43 40 40 30 10 30 10 22 30 10 22 10 22 10 40 10 40 10 40 10 10 40 10 10 10 10 10 10 22 4 5 21 FIGS.,and 21 FIG. 21 FIG. It should be noted that in an embodiment with only one torsion spring′, both the first legand the second legmentioned above create component forces in the axial direction of the rotating shaft, and both of component forces have the same direction. The component forces may force the case coverto move in the axial direction of the rotating shaft, creating a sense of wobbling and unstable for users. In this case, in some embodiments, as shown in, the number of torsion springs′ is two. The end of the first legof one torsion spring′ is fixedly connected to the end of the first leg of the other torsion spring′. The axis of the spiral bodyof one torsion spring′ is substantially parallel to the axis of the spiral bodyof the other torsion spring′. That is, the two torsion springs′ form a structure of a double torsion spring. On the one hand, the double torsion spring may have a high structural strength, a large torque, a good stability, as well as a long lifetime, may further be difficult to deform when being applied with large forces, and may be able to improve the reliability and durability of the housing case. On the other hand, directions of the two component forces created by the double torsion spring in the axial direction of the rotating shaftare reverse, and are able to cancel each other out, thereby enabling the case coverto be centered at the middle position along the axis of the rotating shaft. In some embodiments, due to manufacturing errors, assembly errors, etc., a certain axial clearance exists between the case coverand the mounting basein the axial direction of the rotating shaft. The axial clearance ensures that the case coverand the mounting basemay be properly assembled with each other without providing a large dry friction between the case coverand the mounting base. Due to the existence of this axial clearance, the case coveris possible to be displaced or moved along the axial direction. Under the effects of the above two torsion springs′, when the case coveris arranged in the middle position, forces of the two torsion springs′ along the axial direction are balance. When the case covermoves by a small distance to the left side shown in, the torsion spring′ on the right side may force the case covermove to the right. When the case covermoves by a small distance to the right side shown in, the torsion spring′ on the left side may force the case coverto move to the left, and so on. The case coveris stabilized in a middle balance position. In this way, even if the case coverhas a large axial clearance on both sides of the case coveralong the axial direction, the case covermay not be displaced along the axial direction, which may reduce requirements of a manufacturing accuracy and an assembly accuracy of the case coverand the mounting base, thereby facilitating reducing product costs.

21 FIG. 41 42 40 In some embodiments of the present disclosure, as further shown in, both the first legand the second leghave bent structures. The two torsion springs′ generally constitute a regular hexagonal structure.

11 FIG. 16 FIG. 12 12 12 12 30 12 12 30 42 40 12 42 40 12 10 30 42 40 12 40 a a a a a a In some embodiments, as shown inand, the connecting paneldefines two insertion holes, one of the insertion holesis disposed on one of both opposite sides of the connecting panelalong the axis of the rotating shaft, and the other of the insertion holesis disposed on the other side of both opposite sides of the connecting panelalong the axis of the rotating shaft. The end of the second legof one of the torsion springs′ is arranged in one of the insertion holes, while the end of the second legof the other torsion spring′ is arranged in the other of insertion hole. During the rotation of the case coveraround the axis of the rotating shaft, the end of the second legof the torsion spring′ may be rotated within the insertion holeto improve the force-bearing conditions of the torsion spring′ itself.

11 FIG. 16 FIG. 12 12 12 30 a a a In some embodiments, as shown inand, the two insertion holesare arranged in a same line, for example, central axes of the two insertion holescoincides with each other. The line connecting the two insertion holesis substantially parallel to the axis of the rotating shaft.

11 FIG. 16 FIG. 12 13 FIGS.and 12 123 30 123 30 121 30 42 40 40 2211 2211 2211 123 11 123 2211 123 2211 123 30 12 123 12 a b b a a In some embodiments, as shown inand, the two insertion holesare formed on opposite sides of the tabin the axial direction of the rotating shaft, respectively. The dimension of the tabalong the axial direction of the rotating shaftis less than the dimension of the first panel bodyalong the axial direction of the rotating shaft. In this way, the distance between the ends of the second legsof the two torsion springs′ is relatively small, thereby facilitating the installation of the torsion springs′. Further, as shown in, an avoidance notchis defined at a position of the supporting barat which the supporting barabuts against the tab. When the cover shellis in the closed position, a portion of the tabis arranged in the avoidance notch. In this way, not only the taband the supporting barmay be effectively cooperated with each other, but also a thickness of the tabalong the direction substantially perpendicular to the axial direction of the rotating shaftis relatively great, which facilitates the configuring of the insertion holein the taband avoids a hole wall of the insertion holebeing too thin.

12 13 FIGS.and 221 2214 2212 2214 2214 221 2215 2214 2215 2214 41 40 41 40 2215 41 2214 2214 a a a a. In some embodiments, as shown in, the base bodyincludes a bottom panelconnected to a bottom end of each of the connecting bars. A top surface of the bottom paneldefines a recessed area. The base bodyfurther includes a stopperarranged on a top side of the recessed area. The stopperand a surface of the recessed areadefine a limiting slot together. The first legof the torsion spring′ is movably arranged in the limiting slot. In other words, in the embodiments, when assembling, it is only necessary to snap or engage the first legof the torsion spring′ into the limiting slot, and the stoppermay prevent the first legfrom detaching from the bottom panelfrom the top side of the recessed area

7 FIG. 7 FIG. 21 20 221 20 21 221 20 221 21 20 20 221 221 30 20 221 221 a a a a a a a a In some embodiments, as shown in, an inner surface of the shell bodydefines an insertion slot. The base bodyis able to be inserted into the insertion slotfrom the top opening of the holding space. The base bodyis supported on a bottom wall of the insertion slot. During the assembly, the base bodymay be first inserted downward from the top opening of the holding spaceinto the insertion slot. The insertion slotmay limit not only the downward movement of the base body, but also the movements of the base bodyalong and perpendicular to the axial direction of the rotating shaft, which means the insertion slotlimits the movements of the base bodyin the down, front, back, left, and right directions shown in the. In this way, the fixed installation of the base bodymay be achieved without the use of fastening methods such as screws and gluing, and further without the requirement of additional fasteners. Therefore, the method implemented in the fixed installation is reliable and time-saving.

3 5 FIGS.and 50 50 50 50 221 10 221 20 221 20 50 221 10 50 221 20 50 221 221 20 50 a a a a a a. In some embodiments, as shown in, the housing case further includes a storage panel, and the storage paneldefines a storage slot. The storage panelis pressed or abuts against the side of the base bodyfacing the case coverto fix the base bodyin the insertion slot. After the base bodyis inserted into the insertion slot, the storage panelis pressed against the side of the base bodyfacing the case cover, and the storage panelis configured to fix the base bodyin the insertion slot. That is, the storage panelmay limit an upward movement of the base bodyand prevent the base bodyfrom coming out of the top side of the insertion slot. When the storage case is the earphone charging box, the earphones are arranged in the storage slot

7 FIG. 20 23 24 21 23 30 24 23 21 24 21 24 24 23 21 20 221 23 20 a a. In some embodiments, as shown in, the case bodyincludes a first protrusion barand two second protrusion barsprotruding from the inner surface of the shell body. The first protrusion barextends in a direction substantially parallel to the axis of the rotating shaft. The two second protrusion barsextend from both opposite ends of the first protrusion bartoward the case cover. An end of one of the second protrusion barsaway from the shell bodyis bent toward a side of the other of the second protrusion bars. The two second protrusion bars, the first protrusion bar, and the inner surface of the shell bodycooperatively defines the insertion slot. The base bodymay be supported on the first protrusion bar. In this way, it may be quickly and easily manufactured to form the insertion slot

The above mentioned is only an implementation of the present disclosure, but the scope of protection of the present disclosure is not limited herein. Any skilled familiar with the art may easily think of changes or substitutions within the technical scope disclosed in the present disclosure, all the changes or substitutions should be covered by the scope of protection of the present disclosure. Therefore, the scope of protection of this disclosure shall be subject to the scope of protection of the claims.